fixes Variable Elimination [fixes #261]
fixes Variable Elimination [fixes #261]

pgmpy/pgmpy,kislayabhi/pgmpy,vivek425ster/pgmpy,jhonatanoliveira/pgmpy,anaviltripathi/pgmpy,ankurankan/pgmpy,jhonatanoliveira/pgmpy,liquidmetal/pgmpy,pgmpy/pgmpy,anaviltripathi/pgmpy,yashu-seth/pgmpy,abinashpanda/pgmpy,abinashpanda/pgmpy,vivek425ster/pgmpy,khalibartan/pgmpy,khalibartan/pgmpy,kislayabhi/pgmpy,sandeepkrjha/pgmpy,yashu-seth/pgmpy,ankurankan/pgmpy,pratyakshs/pgmpy,liquidmetal/pgmpy,kris-singh/pgmpy,palashahuja/pgmpy,pratyakshs/pgmpy,kris-singh/pgmpy,sandeepkrjha/pgmpy,palashahuja/pgmpy